To find all the divisors of the number 272,020:
- 1. Decompose the number into prime factors.
- See how you can find out how many factors (divisors) the number has, without actually calculating them.
- 2. Multiply the prime factors in all their unique combinations, that yield different results.
1. Carry out the prime factorization of the number 272,020:
The prime factorization of a number: finding the prime numbers that multiply together to make that number.
272,020 = 22 × 5 × 7 × 29 × 67
272,020 is not a prime number but a composite one.
- Prime number: a natural number that is divisible (divided evenly) only by 1 and itself. A prime number has exactly two factors: 1 and the number itself.
- Examples of prime numbers: 2 (factors 1, 2), 3 (factors 1, 3), 5 (factors 1, 5), 7 (factors 1, 7), 11 (factors 1, 11), 13 (factors 1, 13), ...
- Composite number: a natural number that has at least one factor other than 1 and itself. So it is neither a prime number nor 1.
- Examples of composite numbers: 4 (it has 3 factors: 1, 2, 4), 6 (it has 4 factors: 1, 2, 3, 6), 8 (it has 4 factors: 1, 2, 4, 8), 9 (it has 3 factors: 1, 3, 9), 10 (it has 4 factors: 1, 2, 5, 10), 12 (it has 6 factors: 1, 2, 3, 4, 6, 12), ...
How to count the number of factors of a number?
Without actually finding the factors
- If a number N is prime factorized as:
N = am × bk × cz
where a, b, c are the prime factors and m, k, z are their exponents, natural numbers, .... - ...
- Then the number of factors of the number N can be calculated as:
n = (m + 1) × (k + 1) × (z + 1) - ...
- In our case, the number of factors is calculated as:
- n = (2 + 1) × (1 + 1) × (1 + 1) × (1 + 1) × (1 + 1) = 3 × 2 × 2 × 2 × 2 = 48
But to actually calculate the factors, see below...
2. Multiply the prime factors of the number 272,020
- Multiply the prime factors involved in the prime factorization of the number in all their unique combinations, that give different results.
- Also consider the exponents of these prime factors.
- Also add 1 to the list of factors (divisors). All the numbers are divisible by 1.
All the factors (divisors) are listed below - in ascending order
The list of factors (divisors):
Numbers other than 1 that are not prime factors are composite factors (divisors).
neither prime nor composite =
1
prime factor =
2
composite factor = 2
2 =
4
prime factor =
5
prime factor =
7
composite factor = 2 × 5 =
10
composite factor = 2 × 7 =
14
composite factor = 2
2 × 5 =
20
composite factor = 2
2 × 7 =
28
prime factor =
29
composite factor = 5 × 7 =
35
composite factor = 2 × 29 =
58
prime factor =
67
composite factor = 2 × 5 × 7 =
70
composite factor = 2
2 × 29 =
116
composite factor = 2 × 67 =
134
composite factor = 2
2 × 5 × 7 =
140
composite factor = 5 × 29 =
145
composite factor = 7 × 29 =
203
composite factor = 2
2 × 67 =
268
composite factor = 2 × 5 × 29 =
290
composite factor = 5 × 67 =
335
composite factor = 2 × 7 × 29 =
406
composite factor = 7 × 67 =
469
This list continues below...
... This list continues from above
composite factor = 2
2 × 5 × 29 =
580
composite factor = 2 × 5 × 67 =
670
composite factor = 2
2 × 7 × 29 =
812
composite factor = 2 × 7 × 67 =
938
composite factor = 5 × 7 × 29 =
1,015
composite factor = 2
2 × 5 × 67 =
1,340
composite factor = 2
2 × 7 × 67 =
1,876
composite factor = 29 × 67 =
1,943
composite factor = 2 × 5 × 7 × 29 =
2,030
composite factor = 5 × 7 × 67 =
2,345
composite factor = 2 × 29 × 67 =
3,886
composite factor = 2
2 × 5 × 7 × 29 =
4,060
composite factor = 2 × 5 × 7 × 67 =
4,690
composite factor = 2
2 × 29 × 67 =
7,772
composite factor = 2
2 × 5 × 7 × 67 =
9,380
composite factor = 5 × 29 × 67 =
9,715
composite factor = 7 × 29 × 67 =
13,601
composite factor = 2 × 5 × 29 × 67 =
19,430
composite factor = 2 × 7 × 29 × 67 =
27,202
composite factor = 2
2 × 5 × 29 × 67 =
38,860
composite factor = 2
2 × 7 × 29 × 67 =
54,404
composite factor = 5 × 7 × 29 × 67 =
68,005
composite factor = 2 × 5 × 7 × 29 × 67 =
136,010
composite factor = 2
2 × 5 × 7 × 29 × 67 =
272,020
48 factors (divisors)
What times what is 272,020?
What number multiplied by what number equals 272,020?
All the combinations of any two natural numbers whose product equals 272,020.
1 × 272,020 = 272,020
2 × 136,010 = 272,020
4 × 68,005 = 272,020
5 × 54,404 = 272,020
7 × 38,860 = 272,020
10 × 27,202 = 272,020
14 × 19,430 = 272,020
20 × 13,601 = 272,020
28 × 9,715 = 272,020
29 × 9,380 = 272,020
35 × 7,772 = 272,020
58 × 4,690 = 272,020
67 × 4,060 = 272,020
70 × 3,886 = 272,020
116 × 2,345 = 272,020
134 × 2,030 = 272,020
140 × 1,943 = 272,020
145 × 1,876 = 272,020
203 × 1,340 = 272,020
268 × 1,015 = 272,020
290 × 938 = 272,020
335 × 812 = 272,020
406 × 670 = 272,020
469 × 580 = 272,020
24 unique multiplications The final answer:
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